Publication

Power and Mobility (P&M)
2019

ACCELERATED DEGRADATION OF LI-ION BATTERIES FOR HIGH RATE DISCHARGE APPLICATIONS

by Tony Thampan; PhD; PhD; PhD; Venkatesh Babu

Abstract

The U.S. Army has been pursuing vehicle electrification to achieve enhanced combat effectiveness. The benefits include supporting new capabilities that require high power pulse duty-cycles. These pulse power discharge rate can be significantly higher than commercial Hybrid Electric Vehicle (HEV) Energy Storage Systems (ESS) systems, resulting in significantly lower lifetimes than commercial applications. Results of high power pulse duty cycles on lifetime performance are presented as well as a discussion on the cause of degradation.